tag:blogger.com,1999:blog-3547624387422710226.comments2023-06-05T10:15:15.481-04:00jmcextmanJon Clementshttp://www.blogger.com/profile/16803454357249729716noreply@blogger.comBlogger86125tag:blogger.com,1999:blog-3547624387422710226.post-74681322289317825592021-07-07T16:32:18.187-04:002021-07-07T16:32:18.187-04:00Just ran across this, very useful guidance! "...Just ran across this, very useful guidance! <a href="" rel="nofollow">"https://cpb-us-e1.wpmucdn.com/blogs.cornell.edu/dist/6/7309/files/2019/12/2020-Recommendations-for-Fire-Blight-Management-in-New-York-2.0.pdf,</a>Jon Clementshttps://www.blogger.com/profile/16803454357249729716noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-59134901003862708952021-05-11T12:09:25.160-04:002021-05-11T12:09:25.160-04:00For added intrigue, watch this video presentation ...For added intrigue, watch this video presentation - Interpreting NEWA for Fire Blight 2021 - by Dan Cooley, Stockbridge School of Agriculture, UMass Amherst: <a href="https://youtu.be/CxYwLz514JU" rel="nofollow">https://youtu.be/CxYwLz514JU</a>Jon Clementshttps://www.blogger.com/profile/16803454357249729716noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-36965177393693283292021-05-08T09:51:46.016-04:002021-05-08T09:51:46.016-04:00Thanks DC. Seems we are in agreement the NEWA inte...Thanks DC. Seems we are in agreement the NEWA interface could use an overhaul? Maybe for NEWA 3.0? I hope we been able to increase some understanding of the models, I like you approach. JCJon Clementshttps://www.blogger.com/profile/16803454357249729716noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-83498126170074199512021-05-07T16:04:28.661-04:002021-05-07T16:04:28.661-04:00Let me get this out there up front, and then try t...Let me get this out there up front, and then try to explain why. What I don’t like about NEWA’s Infection Potential, the overall evaluation of risk it gets via the MaryBlyt program, is it depends totally on the 4 factor table, and uses bright colors, which tend to catch growers’ attention. But when you look at what really matters, the EIP, it disagrees with the IP enough to be problematic, I think. It leads to over-spraying, and worse, occasionally not spraying when needed. I think MaryBlyt's four component risk approach misleads people. In fact, the Infection Potential, as NEWA calls it, is not all that important. It's kind of an idiot light that doesn't work that well. Anyone in the apple business knows bloom and wetting are necessary pre-conditions for blossom infection by fire blight. The only remaining question is, “Are there enough bacteria are in the flowers to cause infection?”<br /><br />That information is given by two sets of numbers in NEWA, the second lines in each of the two fire blight forecasts. Cougar Blight uses 4-Day DH, and MaryBlyt/NEWA uses EIP. They're similar, numerical approaches to accumulating degree hours, which drive bacterial growth. Each model translates degree hours to risk curves. The relationship between dd and risk isn’t linear, so there's some translation that goes on behind the scenes to generate the risk values.<br /><br />I strongly believe the numbers are more much important than the risk values. So let's look at them. As you point out, for Cougar Blight thresholds for what's low risk and what's high risk change according to the history of fire blight in an orchard. For the mid-range history that we like to use, "blight in the neighborhood last year", risk doesn't start to get serious until the 4-Day DH hits 300. Above 300, watch out for rain. As for EIP, most pathologists consider 100 to be the threshold for significant risk. George Sundin in Michigan uses an EIP threshold of 70, in large part because they’re dealing with strep-resistance there, and he thinks growers need to be more conservative. In any case, when EIP hits the threshold, be watching for any rain or dew which will trigger infection. <br /><br />Speaking of dew, as the 4-Day DH and the EIP exceed threshold, it's worth keeping an eye on Relative Humidity. WSU says that out there in the desert, if RH is above 80%, then that's enough for dew. NEWA gives us a 90% RH. Again, use RH as a wetting trigger when the numerical risk values are high. <br /><br />In summary, when it comes to NEWA and fire bight, <b>IGNORE THE BRIGHT COLORS AND SCARY WORDS! LOOK AT THE NUMBERS!</b> As 4-Day DH goes over 300, and EIP goes over 100 (or 70 if you're in Michigan), be ready to spray strep with any wetting!Anonymoushttps://www.blogger.com/profile/14285974341998142323noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-54723297727146855542020-11-26T07:14:22.826-05:002020-11-26T07:14:22.826-05:00OK, now you got me nervous! What were the thinner ...OK, now you got me nervous! What were the thinner applications that you made?FarmerMohttps://www.blogger.com/profile/09361067890798045547noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-69447219753189879042020-08-01T05:33:39.549-04:002020-08-01T05:33:39.549-04:00I am really impressed with your blog article, such...I am really impressed with your blog article, such great & useful knowledge you mentioned here.Your post is very informative. I have <br /><br />read all your posts and all are very informative. Thanks for sharing and keep it up like this.<br /><br /><a href="https://mitraweb.in/product/airotec-turbo/" rel="nofollow">Air Assisted Orchard Sprayers</a><br /><a href="https://mitraweb.in/product/airotec-turbo/" rel="nofollow">Air Blast Orchard Sprayers</a><br /><a href="https://mitraweb.in/product/cropmaster-2/" rel="nofollow">Boom Sprayers for Tractors</a><br /><a href="https://mitraweb.in/product/cropmaster-2/" rel="nofollow">Boom Sprayers</a><br /><a href="https://mitraweb.in/products/" rel="nofollow">Tractor Trailed Sprayers</a><br /><a href="https://mitraweb.in/products/" rel="nofollow">Tractor Mounted Sprayers</a><br /><a href="https://mitraweb.in/products/" rel="nofollow">Mist Blowers</a><br /><a href="https://mitraweb.in/products/" rel="nofollow">Sulphorators</a><br /><a href="https://mitraweb.in/products/" rel="nofollow">Axial Fan Sprayers</a><br /><a href="https://mitraweb.in" rel="nofollow">Orchard Sprayers</a><br /><a href="https://mitraweb.in" rel="nofollow">Vineyard Sprayers</a>Tractor Trailed Sprayershttps://www.blogger.com/profile/12623147569515886859noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-45555506928352354212020-07-26T11:31:40.222-04:002020-07-26T11:31:40.222-04:00Thank you for your blog I find it very informative...Thank you for your blog I find it very informative. I have a couple of questions for you. Has anyone tried hand pollinating a few trees to see for sure if it is a pollination issue instead of a culture practice issue? Or looked at pollination on the Liberty guard trees? <br /><br />Another more general question for NC-140 trials and result updates. Why do they often omit soil type and other site specific information from the body of the papers? Is it assumed the reader should know this information? I think it would be helpful to know to better interpret results.289shttps://www.blogger.com/profile/07110929029975921302noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-81739299674537127672020-01-21T14:54:20.716-05:002020-01-21T14:54:20.716-05:00Hi Jon, first of all ALL THE BEST to you and your ...Hi Jon, first of all ALL THE BEST to you and your dear in 2020! A friend of mine sent me your post on Spensa/DTN Trap. VERY interesting. Would like to ask a few questions on the trap by mail? Could you mail me a note with your E-Mail address at pavel.a.altukhov@gmail.com? Best from Russia! PavelMungoJerryhttps://www.blogger.com/profile/06829884756712590978noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-48101163495967692412019-09-13T14:46:11.396-04:002019-09-13T14:46:11.396-04:00Great review of the tour!Great review of the tour!Anonymoushttps://www.blogger.com/profile/04518247788102449466noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-89314544426352855422019-06-13T15:16:08.623-04:002019-06-13T15:16:08.623-04:0013-June. Unfortunately there are a few bugs in the...13-June. Unfortunately there are a few bugs in the app, most noticeably the carbohydrate thinning model graphs are not drawing, and I have been advised as to some input issues in the irrigation model. Stay tuned...thanks for your patience.Jon Clementshttps://www.blogger.com/profile/16803454357249729716noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-19268390087538845152019-06-13T14:54:21.633-04:002019-06-13T14:54:21.633-04:00There is a bug in the phone app with the fruit gro...There is a bug in the phone app with the fruit growth rate model mesurement data input such that when switching trees it defaults to Cluster 2. Make sure you note that when taking measurements.Jon Clementshttps://www.blogger.com/profile/16803454357249729716noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-76880002634756374062016-10-19T02:11:01.866-04:002016-10-19T02:11:01.866-04:00Thanks to share this post its all information is r...Thanks to share this post its all information is really very nice and helpful.<br /><br /><a href="http://www.americantreeservicesupply.com/" rel="nofollow">Pole Saw</a>Pole Sawhttps://www.blogger.com/profile/05102032779856097908noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-36763020435549221222016-01-06T09:30:44.960-05:002016-01-06T09:30:44.960-05:00I e-mailed the contact at getchill.net, asking him...I e-mailed the contact at getchill.net, asking him for references for the models if you ran the app on his site. His response below, good reading, particularly if you are not ready yet to settle for "42." :-)<br /><br />*****<br />Hi Jon,<br /><br />Here are some of the references I used to compute the chill accumulation for each model. Hope this is what you are looking for.<br /><br />I personally only use the below 45 model. There isn't a lot of information about ratings for fruit trees using the dynamic model. Utah models give wacky results in my warm winter climate (San Diego).<br /><br />A reference for Utah, Positive Utah, and Dynamic models.<br />http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3077742/<br /><br />A guide to calculate chill portions using the dynamic model.<br />http://ucanr.edu/sites/fruittree/How-to_Guides/Dynamic_Model_-_Chill_Accumulation/<br /><br />Some fruit trees rated in chill portions using the dynamic model.<br />http://fruitsandnuts.ucdavis.edu/Weather_Services/chilling_accumulation_models/CropChillReq/<br /><br />Here is the correct link for Utah, Positive Utah, and Dynamic models. I accidentally pasted the wrong one above.<br />http://agis.ucdavis.edu/publications/2009/Sensitivity%20of%20winter%20chill%20models%20for%20fruit%20and%20nut%20trees%20to%20climatic%20changes%20expected%20in%20California's%20Central%20Valley.pdf<br /><br />Thanks,<br />Tom<br />Jon Clementshttps://www.blogger.com/profile/16803454357249729716noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-63272664305639971242015-08-12T21:58:32.096-04:002015-08-12T21:58:32.096-04:00Outstanding Jon - thank you!Outstanding Jon - thank you!Joehttps://www.blogger.com/profile/07113912369475830667noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-54157116685262614152015-07-17T01:55:44.716-04:002015-07-17T01:55:44.716-04:00Great Article. Thanks for the info. Does anyone kn...Great Article. Thanks for the info. Does anyone know where I can find a blank "2013 MA DoR IFTA-1" to fill out?jollyhttps://www.blogger.com/profile/05537735317269409660noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-39414698074229827992015-01-04T10:12:22.909-05:002015-01-04T10:12:22.909-05:00I spend about 6 months annually, every workday, pr...I spend about 6 months annually, every workday, pruning fruit trees and have to say this is a very nice article- concise with advice I agree with. Finally a U. guru who endorses pruning by ratios down to secondary wood (I go to tertiary).<br /><br />However, I can't see how you manage annual shoots efficiently without a hand pruner (I like the very hard steel of ARS). A few days of mostly lopper work and my shoulders start to hurt- it is quicker to work close with a hand pruner anyway. <br /><br />Also, have you ever used a Bahco ultra light orchard pruner? Bet it provides better leverage than anything you are endorsing here.<br /><br />Of course, it's all a matter of opinion, and I'd rather just highlight what a great article this is.Anonymoushttps://www.blogger.com/profile/06574113015028146341noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-204028384827881932013-12-05T08:10:37.419-05:002013-12-05T08:10:37.419-05:00Now, compare those trees to these trees: Picture a...Now, compare those trees to these trees: Picture and picture. This is what we more typically see in sweet cherry, rather big 'honkers' with few or no branches <a href="http://www.tnnursery.net" rel="nofollow">Tennessee Wholesale Nursery</a><br />Anonymoushttps://www.blogger.com/profile/05509077370888743660noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-6091997037252577942013-09-18T19:57:56.887-04:002013-09-18T19:57:56.887-04:00Im brand new to fruit trees and planted a couple. ...Im brand new to fruit trees and planted a couple. Lapins and Stella from stark brothers. They are all hurting. Tops of whips died back. Leaves are curled and some seem to have some spots and blackening. Ugh. <br /><br />Think I could email you some pics of the trees and you could tell me what to do?Anonymoushttps://www.blogger.com/profile/12739113880840831151noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-75001962235537476352013-07-08T07:04:43.386-04:002013-07-08T07:04:43.386-04:00Joe, I guess I changed my mind! (Am I allowed?) I ...Joe, I guess I changed my mind! (Am I allowed?) I think all the problems I have mentioned can be dealt with, it's just not for the meek as you know (I am). I assume your bacterial canker was a result of the freeze last year? We did not experience that as bad. Good luck with your cherry planting...Jon Clementshttps://www.blogger.com/profile/16803454357249729716noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-43665035073923482232013-07-07T22:32:09.766-04:002013-07-07T22:32:09.766-04:00Hey, wait a minute -
http://www.masslive.com/news...Hey, wait a minute -<br /><br />http://www.masslive.com/news/index.ssf/2010/06/umass_fruit_tree_specialist_jo.html<br /><br />I can attest to everything on your list. I have a test plot of about 500 on Gi. 5. Just pray you don't have to deal with early spring blossom blast and the resulting bacterial canker.<br /><br />-JoeJoehttps://www.blogger.com/profile/07113912369475830667noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-72266301713955885062013-07-07T22:28:51.022-04:002013-07-07T22:28:51.022-04:00Hey, wait a minute -
http://www.masslive.com/news...Hey, wait a minute -<br /><br />http://www.masslive.com/news/index.ssf/2010/06/umass_fruit_tree_specialist_jo.html<br /><br />My short experience with sweet cherries is very similar. Have planted a test plot of about 500 on Gi 5 in SE WI. I can attest to everything on your list. Just pray you don't have to deal with blossom blast and the resulting bacterial canker.<br /><br />-Joe<br /><br />Joehttps://www.blogger.com/profile/07113912369475830667noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-39608325954948508242013-07-07T18:16:23.129-04:002013-07-07T18:16:23.129-04:00I just been dealing with a spate of tree death lat...I just been dealing with a spate of tree death lately, most likely a result of Number 4.) if cherry trees are happy, they actually like to GROW like crazy!Jon Clementshttps://www.blogger.com/profile/16803454357249729716noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-33397088134639350332013-07-07T16:01:29.798-04:002013-07-07T16:01:29.798-04:00Not bad Jon. Not sure I agree with your Number 1 t...Not bad Jon. Not sure I agree with your Number 1 though, I'll let you know in a couple years. How about adding they either set nothing or way too much. Deer think they're planted just for them. Miss a cover and leaf spot will defoliate them. Season here is very short. Bees need to move pollen within a couple of hours rather than days. Can't seem to find the light at the end of this tunnel!FarmerMohttps://www.blogger.com/profile/09361067890798045547noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-61178226302600905272013-03-10T18:21:32.940-04:002013-03-10T18:21:32.940-04:00Great summary Jon. Hats off for putting together a...Great summary Jon. Hats off for putting together a first class conference. Kuddos and many thanks!FarmerMohttps://www.blogger.com/profile/09361067890798045547noreply@blogger.comtag:blogger.com,1999:blog-3547624387422710226.post-66930771022102804052012-10-09T06:32:08.696-04:002012-10-09T06:32:08.696-04:00I'd say you are right on Jon. I also think we ...I'd say you are right on Jon. I also think we should start taking particular attention to the bottom quarter of the trees over the next couple of years. I'd not want to see production move up higher at the expense of a loss of production on low hanging branches. I'm going to see if we have any trees not picked and try to determine some sort of ratio top vs bottom. moFarmerMohttps://www.blogger.com/profile/09361067890798045547noreply@blogger.com